Teletext (of all people) have this today:
Duffy parades new singleDuffy releases new single Rain On Your Parade on November 17. It's co-written and produced by Steve Booker, who also produced Mercy. Although it's a new song not featured on her Rockferry album, it will be added to the album along with six other new songs when it gets a Deluxe Edition on November 24.
Also someone has upped the song on youtube: